A group of diseases characterized by uncontrolled cell division. A disorder in which cells produce a localized tumor. A disorder in which tissues of the body are replaced by nonfunctional cells. All of these. None of these.
The United States country code 1 will allow you to call United States from another country. United States telephone code 1 is dialed after the IDD. United States international dialing 1 is followed by an area code. The United States area code table below shows the various city codes for United States.
NANPA administers the area code system designed in the 1940s by AT&T and Bell Laboratories to route long distance calls automatically. In 1947 Texas received its first four area codes: 214, 512, 713 and 915. NANPA is also the source of all telephone numbers. It assigns the prefixes within any area code to a telecommunications company.